Compression Ignition Addict
Join Date: Aug 2007
Location: New Martinsville, West Virginia
Thanked 54 Times in 52 Posts
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I'll try to help... my truck does the same thing. I've heard that replaceing the powersteering pump would do the trick, but i have yet to have the free time to change it to find out. The only other option is the steering box it'self. I have driven other superduty trucks, and the steering is lock-to-lock-with-a-finger easy.
As to the vibration, I'd say you have an axle universal joint that is bad... dry, gritty bearings, might be able to grease it, but likely needs replaced.
Post some info about your truck, will help us give better advice, knowing your trucks details better. As to the MPG, I only get about 12 on avrage, tops at 14 on the highway, but it's 10K lbs, and 4.10 gears. I mostly run 2 lane county roads up and down the hills. My buddy has a F250 7.3 with 6sp man trans, 4x4 but with 3.73 gears. He gets 18 regularly, and has no mods at all, none, running the same type roads/miles.
DIY intake, straight pipe the exhaust, get some gauges, and a DP tuner. About $800 should cover it. That's all you really need for a daily driver/work truck.
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